157272017 has 32 divisors (see below), whose sum is σ = 192864000. Its totient is φ = 128024064.

The previous prime is 157272007. The next prime is 157272019. The reversal of 157272017 is 710272751.

It is not a de Polignac number, because 157272017 - 2⁴ = 157272001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157272019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 964778 + ... + 964940.

It is an arithmetic number, because the mean of its divisors is an integer number (6027000).

Almost surely, 2^157272017 is an apocalyptic number.

It is an amenable number.

157272017 is a deficient number, since it is larger than the sum of its proper divisors (35591983).

157272017 is an equidigital number, since it uses as much as digits as its factorization.

157272017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 157272017 is about 12540.8140485377. The cubic root of 157272017 is about 539.7804514450.

The spelling of 157272017 in words is "one hundred fifty-seven million, two hundred seventy-two thousand, seventeen".